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Re: Lecture 63: Infratemporal Fossa, Temporomandibular Joint, Submandibular and Otic Ganglia - True False

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Posted by Alexis on December 09, 2021 at 12:39:14:

In Reply to: Lecture 63: Infratemporal Fossa, Temporomandibular Joint, Submandibular and Otic Ganglia - True False posted by lae2 on December 05, 2021 at 14:20:48:

Lecture 63
1. The lesser superficial petrosal nerve is part of a somatic plexus whereas the buccal nerve is part of an autonomic trunk.

- false ⇒ LSPN from tympanic plexus

2. The masseteric nerve passes through the mandibular notch.

- true

3. The posterior superior alveolar nerve branches from the maxillary nerve within the pterygopalatine fossa and enters the infratemporal fossa through the pterygomaxillary fissure.

- true

4. The buccal nerve passes the lateral aspect of the masseter muscle.

- false

5. The chorda tympani joins onto the inferior alveolar nerve before distributing to the anterior 2/3 of the tongue.

- false

6. Postganglionic fibers from the otic ganglion join onto; first the chorda tympani, and then the lingual nerve.

- false ⇒ otic ganglion to parotid (so auriculotemporal)

7. A lesion of the chorda tympani within the infratemporal fossa is expected to decrease sensitivity of touch to the posterior 1/3 of the tongue as well as decrease lacrimation.

- false ⇒ anterior aspect

8. A lesion of the lingual nerve within the floor of the mouth is expected to disrupt both taste and touch to the anterior 2/3 of the tongue.

- true

9. The mouth is apt to be stuck open if the condyle of the mandible slips forward to the articular tubercle.

- true

10. The left body of the mandible is one on the most commonly broken bones in males.

- true

11. The inferior alveolar nerve contributes to the inferior dental plexus and then continues onto the face as the mental nerve.

- true

12. The nerve to the mylohyoid conveys GSE fibers to the mylohyoid muscle and SVE fibers to the anterior belly of the digastric.

- false ⇒ should both be SVE fibers

13. The buccal nerve conveys SVE and GSA fibers to the buccinator muscle.

- true

14. The middle meningeal artery passes from the infratemporal fossa through the foramen spinosum to then be in the anterior cranial fossa.

- false ⇒ middle cranial fossa

15. The inferior alveolar nerve encircles the middle meningeal artery.

- false ⇒ auriculotemporal encircles MMA

16. The posterior superior alveolar artery does not enter the pterygopalatine fossa despite that the nerve of the same name is within this fossa.

- true

17. The medial pterygoid muscle arises from the medial pterygoid plate whereas the lateral pterygoid muscle arises from the lateral pterygoid plate.

- false ⇒ medial pterygoid comes from LTP

18. The hamulus is an inferior extension of the lateral pterygoid plate.

- false ⇒ medial pterygoid plate

19. The maxillary artery passes from the infratemporal fossa to the pterygopalatine fossa whereas the maxillary nerve does not enter the infratemporal fossa.

- false

20. The lingula of the mandible is a site of attachment for the pterygomandibular raphe.

- false

21. The hamulus of the medial pterygoid plate is a site of attachment for the sphenomandibular ligament.

- false ⇒ pterygomandibular ligament

22. The groove for the mylohyoid nerve proceeds inferior and anterior from the mandibular foramen

- true

23. A lesion of the lesser superficial petrosal nerve is expected to cause ipsilateral salivatory deficits.

- true

24. A lesion of the lingual nerve at the foramen ovale is expected to disrupt touch (GSA) but not taste (SVA) to the anterior 2/3 of the tongue.

- true

25. A lesion of the auriculotemporal nerve just medial to the neck of the mandible is expected to cause a salivary deficit.

- true

26. The sympathetic root of the otic ganglion is derived from the external carotid plexus (middle meningeal plexus).

- true


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